diff options
Diffstat (limited to 'source/3rd-party/SDL2/src/video/mir/SDL_mirvulkan.c')
| -rw-r--r-- | source/3rd-party/SDL2/src/video/mir/SDL_mirvulkan.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/source/3rd-party/SDL2/src/video/mir/SDL_mirvulkan.c b/source/3rd-party/SDL2/src/video/mir/SDL_mirvulkan.c new file mode 100644 index 0000000..6ba3fa3 --- /dev/null +++ b/source/3rd-party/SDL2/src/video/mir/SDL_mirvulkan.c @@ -0,0 +1,176 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ + +/* + * @author Mark Callow, www.edgewise-consulting.com. Based on Jacob Lifshay's + * SDL_x11vulkan.c. + */ + +#include "../../SDL_internal.h" + +#if SDL_VIDEO_VULKAN && SDL_VIDEO_DRIVER_MIR + +#include "SDL_mirvideo.h" +#include "SDL_mirwindow.h" +#include "SDL_assert.h" + +#include "SDL_loadso.h" +#include "SDL_mirvulkan.h" +#include "SDL_syswm.h" + +int MIR_Vulkan_LoadLibrary(_THIS, const char *path) +{ + VkExtensionProperties *extensions = NULL; + Uint32 extensionCount = 0; + SDL_bool hasSurfaceExtension = SDL_FALSE; + SDL_bool hasMIRSurfaceExtension = SDL_FALSE; + PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr = NULL; + if(_this->vulkan_config.loader_handle) + return SDL_SetError("Vulkan already loaded"); + + /* Load the Vulkan loader library */ + if(!path) + path = SDL_getenv("SDL_VULKAN_LIBRARY"); + if(!path) + path = "libvulkan.so.1"; + _this->vulkan_config.loader_handle = SDL_LoadObject(path); + if(!_this->vulkan_config.loader_handle) + return -1; + SDL_strlcpy(_this->vulkan_config.loader_path, path, + SDL_arraysize(_this->vulkan_config.loader_path)); + vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)SDL_LoadFunction( + _this->vulkan_config.loader_handle, "vkGetInstanceProcAddr"); + if(!vkGetInstanceProcAddr) + goto fail; + _this->vulkan_config.vkGetInstanceProcAddr = (void *)vkGetInstanceProcAddr; + _this->vulkan_config.vkEnumerateInstanceExtensionProperties = + (void *)((PFN_vkGetInstanceProcAddr)_this->vulkan_config.vkGetInstanceProcAddr)( + VK_NULL_HANDLE, "vkEnumerateInstanceExtensionProperties"); + if(!_this->vulkan_config.vkEnumerateInstanceExtensionProperties) + goto fail; + extensions = SDL_Vulkan_CreateInstanceExtensionsList( + (PFN_vkEnumerateInstanceExtensionProperties) + _this->vulkan_config.vkEnumerateInstanceExtensionProperties, + &extensionCount); + if(!extensions) + goto fail; + for(Uint32 i = 0; i < extensionCount; i++) + { + if(SDL_strcmp(VK_KHR_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0) + hasSurfaceExtension = SDL_TRUE; + else if(SDL_strcmp(VK_KHR_MIR_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0) + hasMIRSurfaceExtension = SDL_TRUE; + } + SDL_free(extensions); + if(!hasSurfaceExtension) + { + SDL_SetError("Installed Vulkan doesn't implement the " + VK_KHR_SURFACE_EXTENSION_NAME " extension"); + goto fail; + } + else if(!hasMIRSurfaceExtension) + { + SDL_SetError("Installed Vulkan doesn't implement the " + VK_KHR_MIR_SURFACE_EXTENSION_NAME "extension"); + goto fail; + } + return 0; + +fail: + SDL_UnloadObject(_this->vulkan_config.loader_handle); + _this->vulkan_config.loader_handle = NULL; + return -1; +} + +void MIR_Vulkan_UnloadLibrary(_THIS) +{ + if(_this->vulkan_config.loader_handle) + { + SDL_UnloadObject(_this->vulkan_config.loader_handle); + _this->vulkan_config.loader_handle = NULL; + } +} + +SDL_bool MIR_Vulkan_GetInstanceExtensions(_THIS, + SDL_Window *window, + unsigned *count, + const char **names) +{ + static const char *const extensionsForMir[] = { + VK_KHR_SURFACE_EXTENSION_NAME, VK_KHR_MIR_SURFACE_EXTENSION_NAME + }; + if(!_this->vulkan_config.loader_handle) + { + SDL_SetError("Vulkan is not loaded"); + return SDL_FALSE; + } + return SDL_Vulkan_GetInstanceExtensions_Helper( + count, names, SDL_arraysize(extensionsForMir), + extensionsForMir); +} + +SDL_bool MIR_Vulkan_CreateSurface(_THIS, + SDL_Window *window, + VkInstance instance, + VkSurfaceKHR *surface) +{ + MIR_Window *windowData = (MIR_Window *)window->driverdata; + PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr = + (PFN_vkGetInstanceProcAddr)_this->vulkan_config.vkGetInstanceProcAddr; + PFN_vkCreateMirSurfaceKHR vkCreateMirSurfaceKHR = + (PFN_vkCreateMirSurfaceKHR)vkGetInstanceProcAddr( + (VkInstance)instance, + "vkCreateMirSurfaceKHR"); + VkMirSurfaceCreateInfoKHR createInfo; + VkResult result; + + if(!_this->vulkan_config.loader_handle) + { + SDL_SetError("Vulkan is not loaded"); + return SDL_FALSE; + } + + if(!vkCreateMirSurfaceKHR) + { + SDL_SetError(VK_KHR_MIR_SURFACE_EXTENSION_NAME + " extension is not enabled in the Vulkan instance."); + return SDL_FALSE; + } + SDL_zero(createInfo); + createInfo.sType = VK_STRUCTURE_TYPE_MIR_SURFACE_CREATE_INFO_KHR; + createInfo.pNext = NULL; + createInfo.flags = 0; + createInfo.connection = windowData->mir_data->connection; + createInfo.mirSurface = windowData->window; + result = vkCreateMirSurfaceKHR(instance, &createInfo, + NULL, surface); + if(result != VK_SUCCESS) + { + SDL_SetError("vkCreateMirSurfaceKHR failed: %s", + SDL_Vulkan_GetResultString(result)); + return SDL_FALSE; + } + return SDL_TRUE; +} + +#endif + +/* vim: set ts=4 sw=4 expandtab: */ |